Organization and Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Excise taxes
Excise taxes	$ 315	$ 345	$ 333
Consolidation of variable interest entities
Miscellaneous other property and investments	12	12
Cash and cash equivalents	1	0
Prepayments and other current assets	0	1
Accounts payable	0	5
VIE - exposure to loss from capital lease agreements	7.5
VIE - activity with VIE related to lease payments	2	2	2
Federal grant
Federal grant	200
Reimbursement percentage of allowable project costs	50.00%
Allowable project costs incurred	$ 100